Home / 8,678-18,928

Finding the Third Proportional to 8,678 and 18,928

Calculator

Solution

The third proportional to 8,678 and 18,928 is: 41,284.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678 : 18,928 = 18,928 : x
  2. Step 2: Convert to fraction form
    8,678/18,928 = 18,928/x
  3. Step 3: Cross multiply
    8,678x = 18,928 × 18,928
  4. Step 4: Simplify right side
    8,678x = 358,269,184
  5. Step 5: Solve for x
    x = 358,269,184/8,678
  6. Step 6: Final answer
    x = 41,284.76

Related Problems

Find third proportional to 4,339 and 9,464
Half scale
Find third proportional to 17,356 and 37,856
Double scale
Find third proportional to 8,680 and 18,932
Similar ratio
Find third proportional to 13,017 and 28,392
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.